結果
問題 | No.2855 Move on Grid |
ユーザー | prin_kemkem |
提出日時 | 2024-08-25 14:32:46 |
言語 | PyPy3 (7.3.15) |
結果 |
AC
|
実行時間 | 1,022 ms / 3,000 ms |
コード長 | 1,763 bytes |
コンパイル時間 | 208 ms |
コンパイル使用メモリ | 82,148 KB |
実行使用メモリ | 186,716 KB |
最終ジャッジ日時 | 2024-08-25 14:33:20 |
合計ジャッジ時間 | 29,329 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge3 |
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ファイルパターン | 結果 |
---|---|
other | AC * 40 |
ソースコード
from collections import defaultdict, deque, Counter # from functools import cache # import copy from itertools import combinations, permutations, product, accumulate, groupby, chain # from more_itertools import distinct_permutations from heapq import heapify, heappop, heappush import math import bisect from pprint import pprint from random import randint, shuffle, randrange import sys # sys.setrecursionlimit(200000) input = lambda: sys.stdin.readline().rstrip('\n') inf = float('inf') mod1 = 10**9+7 mod2 = 998244353 def ceil_div(x, y): return -(-x//y) ################################################# def f(i, j): return i*M + j D = [(1, 0), (-1, 0), (0, 1), (0, -1)] def judge(x): board = [inf]*(N*M) board[0] = A[0][0] < x dq = deque([(board[0], 0, 0)]) while dq: k, i, j = dq.pop() if k > board[f(i, j)]: continue for di, dj in D: ni = i+di; nj = j+dj if 0 <= ni < N and 0 <= nj < M: if A[ni][nj] < x: nk = k+1 if nk < board[f(ni, nj)] and nk <= K: board[f(ni, nj)] = nk if ni == N-1 and nj == M-1: return True dq.appendleft((nk, ni, nj)) else: nk = k if nk < board[f(ni, nj)]: board[f(ni, nj)] = nk if ni == N-1 and nj == M-1: return True dq.append((nk, ni, nj)) return False N, M, K = map(int, input().split()) K = min(K, N+M) A = [list(map(int, input().split())) for _ in range(N)] ok, ng = 1, 10**9+1 while(abs(ok-ng)>1): mid = (ok+ng)//2 if judge(mid): ok = mid else: ng = mid print(ok)